Abstract
ALTHOUGH Oryza sativa L. is generally considered to be a short-day plant, a delay in flowering by short-day treatment has been reported1–7. Varieties with such a response would have a potential use in studies of physiology and breeding, and would be most interesting ecologically. The data reported on such varieties do not present a clear picture of their reaction, however, and are insufficient to warrant their classification as intermediate, much less long-day, types. To clarify this point, we have carried out detailed tests on several varieties of rice previously reported to be long-day or intermediate. ‘BPI-76’, a variety known to be sensitive to photoperiod, was included as a control.
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VERGARA, B., LILIS, R. Response to Photoperiod of Reported Long-day and Intermediate Varieties of Rice. Nature 216, 168 (1967). https://doi.org/10.1038/216168a0
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DOI: https://doi.org/10.1038/216168a0
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